2007 WNV Activity by County

(2021-08-04) - Source: http://westnile.ca.gov

Total Positive Counties: 51

CountyHuman CasesDead BirdsMosquito SamplesSentinel ChickensHorses
State Totals3801396100751028
Alameda-191--
Alpine-----
Amador-11--
Butte1627532-
Calaveras-3---
Colusa2412-
Contra Costa328285-
Del Norte-----
El Dorado-7---
Fresno1711461461
Glenn73618-
Humboldt-2---
Imperial3-417-
Inyo-1---
Kern140124206824
Kings7930222
Lake-382-
Lassen-2---
Los Angeles361659227-
Madera2684-
Marin-4---
Mariposa-----
Mendocino23---
Merced434211-
Modoc-1---
Mono-----
Monterey-----
Napa12---
Nevada-5---
Orange94327--
Placer41625131
Plumas-1---
Riverside1763044-
Sacramento25142135192
San Benito-----
San Bernardino426635-
San Diego15108614
San Francisco-1---
San Joaquin1046154241
San Luis Obispo-9--1
San Mateo-2---
Santa Barbara-1---
Santa Clara48310--
Santa Cruz-6---
Shasta9481773
Sierra-----
Siskiyou-4--2
Solano13-71
Sonoma1191-2
Stanislaus211308835-
Sutter312317-
Tehama420282
Trinity-1---
Tulare103823272
Tuolumne-1---
Ventura115-1-
Yolo225104-
Yuba-1210-
State Totals3801396100751028